Scala - Pad an array to a certain size

Question

I have a method:

def loadRom(filename: String) : Array[Int] = {
  val is = new FileInputStream(filename)
  Stream.continually(is.read).takeWhile(-1 !=).toArray
}

It returns an array of 0x8000 (I can always guarantee that). I want to load it into an array of 0x200000 size. Is there an elegant way to do that? What about padding it out to 0x200000?

Edit: Whoops. I JUST noticed the padTo method does what I want. Close?

Answer 1

For completeness's sake, there's SeqLike.padTo (arrays implicitly extend SeqLike). Assuming you want to pad with zero bytes, just append .padTo(0x200000, 0) to the result expression and you're good to go.